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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.

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1// Copyright (c) 2014-present The Bitcoin Core developers
2// Distributed under the MIT software license, see the accompanying
3// file COPYING or http://www.opensource.org/licenses/mit-license.php.
4
5#include <hash.h>
6#include <test/util/random.h>
7#include <test/util/setup_common.h>
8#include <util/serfloat.h>
9#include <serialize.h>
10#include <streams.h>
11
12#include <boost/test/unit_test.hpp>
13
14#include <cmath>
15#include <limits>
16
17BOOST_FIXTURE_TEST_SUITE(serfloat_tests, BasicTestingSetup)
18
19namespace {
20
21uint64_t TestDouble(double f) {
22    uint64_t i = EncodeDouble(f);
23    double f2 = DecodeDouble(i);
24    if (std::isnan(f)) {
25        // NaN is not guaranteed to round-trip exactly.
26        BOOST_CHECK(std::isnan(f2));
27    } else {
28        // Everything else is.
29        BOOST_CHECK(!std::isnan(f2));
30        uint64_t i2 = EncodeDouble(f2);
31        BOOST_CHECK_EQUAL(f, f2);
32        BOOST_CHECK_EQUAL(i, i2);
33    }
34    return i;
35}
36
37} // namespace
38
39BOOST_AUTO_TEST_CASE(double_serfloat_tests) {
40    // Test specific values against their expected encoding.
41    BOOST_CHECK_EQUAL(TestDouble(0.0), 0U);
42    BOOST_CHECK_EQUAL(TestDouble(-0.0), 0x8000000000000000);
43    BOOST_CHECK_EQUAL(TestDouble(std::numeric_limits<double>::infinity()), 0x7ff0000000000000U);
44    BOOST_CHECK_EQUAL(TestDouble(-std::numeric_limits<double>::infinity()), 0xfff0000000000000);
45    BOOST_CHECK_EQUAL(TestDouble(0.5), 0x3fe0000000000000ULL);
46    BOOST_CHECK_EQUAL(TestDouble(1.0), 0x3ff0000000000000ULL);
47    BOOST_CHECK_EQUAL(TestDouble(2.0), 0x4000000000000000ULL);
48    BOOST_CHECK_EQUAL(TestDouble(4.0), 0x4010000000000000ULL);
49    BOOST_CHECK_EQUAL(TestDouble(785.066650390625), 0x4088888880000000ULL);
50    BOOST_CHECK_EQUAL(TestDouble(3.7243058682384174), 0x400dcb60e0031440);
51    BOOST_CHECK_EQUAL(TestDouble(91.64070592566159), 0x4056e901536d447a);
52    BOOST_CHECK_EQUAL(TestDouble(-98.63087668642575), 0xc058a860489c007a);
53    BOOST_CHECK_EQUAL(TestDouble(4.908737756962054), 0x4013a28c268b2b70);
54    BOOST_CHECK_EQUAL(TestDouble(77.9247330021754), 0x40537b2ed3547804);
55    BOOST_CHECK_EQUAL(TestDouble(40.24732825357566), 0x40441fa873c43dfc);
56    BOOST_CHECK_EQUAL(TestDouble(71.39395607929222), 0x4051d936938f27b6);
57    BOOST_CHECK_EQUAL(TestDouble(58.80100710817612), 0x404d668766a2bd70);
58    BOOST_CHECK_EQUAL(TestDouble(-30.10665786964975), 0xc03e1b4dee1e01b8);
59    BOOST_CHECK_EQUAL(TestDouble(60.15231509068704), 0x404e137f0f969814);
60    BOOST_CHECK_EQUAL(TestDouble(-48.15848711335961), 0xc04814494e445bc6);
61    BOOST_CHECK_EQUAL(TestDouble(26.68450101125353), 0x403aaf3b755169b0);
62    BOOST_CHECK_EQUAL(TestDouble(-65.72071986604303), 0xc0506e2046378ede);
63    BOOST_CHECK_EQUAL(TestDouble(17.95575825512381), 0x4031f4ac92b0a388);
64    BOOST_CHECK_EQUAL(TestDouble(-35.27171863226279), 0xc041a2c7ad17a42a);
65    BOOST_CHECK_EQUAL(TestDouble(-8.58810329425124), 0xc0212d1bdffef538);
66    BOOST_CHECK_EQUAL(TestDouble(88.51393044338977), 0x405620e43c83b1c8);
67    BOOST_CHECK_EQUAL(TestDouble(48.07224932612732), 0x4048093f77466ffc);
68    BOOST_CHECK_EQUAL(TestDouble(9.867348871395659e+117), 0x586f4daeb2459b9f);
69    BOOST_CHECK_EQUAL(TestDouble(-1.5166424385129721e+206), 0xeabe3bbc484bd458);
70    BOOST_CHECK_EQUAL(TestDouble(-8.585156555624594e-275), 0x8707c76eee012429);
71    BOOST_CHECK_EQUAL(TestDouble(2.2794371091628822e+113), 0x5777b2184458f4ee);
72    BOOST_CHECK_EQUAL(TestDouble(-1.1290476594131867e+163), 0xe1c91893d3488bb0);
73    BOOST_CHECK_EQUAL(TestDouble(9.143848423979275e-246), 0x0d0ff76e5f2620a3);
74    BOOST_CHECK_EQUAL(TestDouble(-2.8366718125941117e+81), 0xd0d7ec7e754b394a);
75    BOOST_CHECK_EQUAL(TestDouble(-1.2754409481684012e+229), 0xef80d32f8ec55342);
76    BOOST_CHECK_EQUAL(TestDouble(6.000577060053642e-186), 0x197a1be7c8209b6a);
77    BOOST_CHECK_EQUAL(TestDouble(2.0839423284378986e-302), 0x014c94f8689cb0a5);
78    BOOST_CHECK_EQUAL(TestDouble(-1.422140051483753e+259), 0xf5bd99271d04bb35);
79    BOOST_CHECK_EQUAL(TestDouble(-1.0593973991188853e+46), 0xc97db0cdb72d1046);
80    BOOST_CHECK_EQUAL(TestDouble(2.62945125875249e+190), 0x67779b36366c993b);
81    BOOST_CHECK_EQUAL(TestDouble(-2.920377657275094e+115), 0xd7e7b7b45908e23b);
82    BOOST_CHECK_EQUAL(TestDouble(9.790289014855851e-118), 0x27a3c031cc428bcc);
83    BOOST_CHECK_EQUAL(TestDouble(-4.629317182034961e-114), 0xa866ccf0b753705a);
84    BOOST_CHECK_EQUAL(TestDouble(-1.7674605603846528e+279), 0xf9e8ed383ffc3e25);
85    BOOST_CHECK_EQUAL(TestDouble(2.5308171727712605e+120), 0x58ef5cd55f0ec997);
86    BOOST_CHECK_EQUAL(TestDouble(-1.05034156412799e+54), 0xcb25eea1b9350fa0);
87
88    // Test extreme values
89    BOOST_CHECK_EQUAL(TestDouble(std::numeric_limits<double>::min()), 0x10000000000000);
90    BOOST_CHECK_EQUAL(TestDouble(-std::numeric_limits<double>::min()), 0x8010000000000000);
91    BOOST_CHECK_EQUAL(TestDouble(std::numeric_limits<double>::max()), 0x7fefffffffffffff);
92    BOOST_CHECK_EQUAL(TestDouble(-std::numeric_limits<double>::max()), 0xffefffffffffffff);
93    BOOST_CHECK_EQUAL(TestDouble(std::numeric_limits<double>::lowest()), 0xffefffffffffffff);
94    BOOST_CHECK_EQUAL(TestDouble(-std::numeric_limits<double>::lowest()), 0x7fefffffffffffff);
95    BOOST_CHECK_EQUAL(TestDouble(std::numeric_limits<double>::denorm_min()), 0x1);
96    BOOST_CHECK_EQUAL(TestDouble(-std::numeric_limits<double>::denorm_min()), 0x8000000000000001);
97    // Note that all NaNs are encoded the same way.
98    BOOST_CHECK_EQUAL(TestDouble(std::numeric_limits<double>::quiet_NaN()), 0x7ff8000000000000);
99    BOOST_CHECK_EQUAL(TestDouble(-std::numeric_limits<double>::quiet_NaN()), 0x7ff8000000000000);
100    BOOST_CHECK_EQUAL(TestDouble(std::numeric_limits<double>::signaling_NaN()), 0x7ff8000000000000);
101    BOOST_CHECK_EQUAL(TestDouble(-std::numeric_limits<double>::signaling_NaN()), 0x7ff8000000000000);
102
103    // Construct doubles to test from the encoding.
104    static_assert(sizeof(double) == 8);
105    static_assert(sizeof(uint64_t) == 8);
106    for (int j = 0; j < 1000; ++j) {
107        // Iterate over 9 specific bits exhaustively; the others are chosen randomly.
108        // These specific bits are the sign bit, and the 2 top and bottom bits of
109        // exponent and mantissa in the IEEE754 binary64 format.
110        for (int x = 0; x < 512; ++x) {
111            uint64_t v = m_rng.randbits(64);
112            int x_pos = 0;
113            for (int v_pos : {0, 1, 50, 51, 52, 53, 61, 62, 63}) {
114                v &= ~(uint64_t{1} << v_pos);
115                if ((x >> (x_pos++)) & 1) v |= (uint64_t{1} << v_pos);
116            }
117            double f;
118            memcpy(&f, &v, 8);
119            TestDouble(f);
120        }
121    }
122}
123
124/*
125Python code to generate the below hashes:
126
127    def reversed_hex(x):
128        return bytes(reversed(x)).hex()
129
130    def dsha256(x):
131        return hashlib.sha256(hashlib.sha256(x).digest()).digest()
132
133    reversed_hex(dsha256(b''.join(struct.pack('<d', x) for x in range(0,1000)))) == '43d0c82591953c4eafe114590d392676a01585d25b25d433557f0d7878b23f96'
134*/
135BOOST_AUTO_TEST_CASE(doubles)
136{
137    DataStream ss{};
138    // encode
139    for (int i = 0; i < 1000; i++) {
140        ss << EncodeDouble(i);
141    }
142    BOOST_CHECK(Hash(ss) == uint256{"43d0c82591953c4eafe114590d392676a01585d25b25d433557f0d7878b23f96"});
143
144    // decode
145    for (int i = 0; i < 1000; i++) {
146        uint64_t val;
147        ss >> val;
148        double j = DecodeDouble(val);
149        BOOST_CHECK_MESSAGE(i == j, "decoded:" << j << " expected:" << i);
150    }
151}
152
153BOOST_AUTO_TEST_SUITE_END()
154

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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